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post #1 of 15 (permalink) Old 03-06-2012, 02:27 PM Thread Starter
 
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Polaris FST turbo engine, in a Redline?

Complete Weber turbo engined polaris fst sled $2995 with no reserve on ebay. Item # 130660309847

Well this did not sell on Ebay. Called dealer and they would sell for 3200 shipped and taxed.
My questions for you turbo guys are:
1) Are these Webers the correct orientation for the Revolt?
Orientation as far as clutch exhaust and intake on correct sides
2) What else would be needed?
3) Could I run all the electronics from the sled, thus avoiding reflash?
4) Can I run the polaris primary with the Revolt secondary?
My idea is to buy a complete low mile sled and pull all that is needed.
Then replace the motor with a carbed 2 stroke twin which are really cheap.
Ride the sled or sell it for 2 grand quick. I would then have about $1700 in a turbo conversion with my stock motor as back up or sell quick for $1000.
OK turbo guys, if my thinking and calculations are flawed please burst my bubble gently.


2007 HMF customized Revolt (exhaust, fuel controller, wrap, bumpers and narrowed suspension for GNCC racing).
Full hand controls, separate braking, DWT beadlocks, 2:1 steering quickener,
Fireball Billet hubs, Holeshot ATR's and Unisteer electric power steering, swaybars and Tatum rack.

Last edited by renegadevtwin; 03-13-2012 at 12:46 PM.
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post #2 of 15 (permalink) Old 03-13-2012, 12:49 PM Thread Starter
 
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Weber turbo polaris fst Motor

Bump for edited original post now with questions for the Turbo guys. Maybe the moderators can modify the Title and move it to general discussion or I can start new thread if needed. Thanks

Answered one question with some research. Looks like exhaust and intake are on wrong sides.
Can these webers be assembled/oriented the same as the Redlines are?


2007 HMF customized Revolt (exhaust, fuel controller, wrap, bumpers and narrowed suspension for GNCC racing).
Full hand controls, separate braking, DWT beadlocks, 2:1 steering quickener,
Fireball Billet hubs, Holeshot ATR's and Unisteer electric power steering, swaybars and Tatum rack.

Last edited by renegadevtwin; 03-13-2012 at 01:07 PM.
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post #3 of 15 (permalink) Old 03-13-2012, 01:35 PM Thread Starter
 
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re: Polaris FST turbo engine, in a Redline?

The Yamaha Apex R1 Snow Mobile Motor looks more feasable as the exhaust clutch and intakes are arranged the same as our Webers

Maybe I will do the same process with a Yamaha Apex R1 Snow Mobile Motor




2007 HMF customized Revolt (exhaust, fuel controller, wrap, bumpers and narrowed suspension for GNCC racing).
Full hand controls, separate braking, DWT beadlocks, 2:1 steering quickener,
Fireball Billet hubs, Holeshot ATR's and Unisteer electric power steering, swaybars and Tatum rack.
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post #4 of 15 (permalink) Old 03-13-2012, 03:41 PM
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re: Polaris FST turbo engine, in a Redline?

As I recall the head can be turned 180 degrees, so that the exhaust is on the other side. Check with Mike @ RRP.
The clutch taper might even be the same.



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post #5 of 15 (permalink) Old 03-13-2012, 04:12 PM Thread Starter
 
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re: Polaris FST turbo engine, in a Redline?

Thanks Bear Foot, Im sure mike will chime in. Can you move this thread to general discussion and change the title? Thanks


2007 HMF customized Revolt (exhaust, fuel controller, wrap, bumpers and narrowed suspension for GNCC racing).
Full hand controls, separate braking, DWT beadlocks, 2:1 steering quickener,
Fireball Billet hubs, Holeshot ATR's and Unisteer electric power steering, swaybars and Tatum rack.
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post #6 of 15 (permalink) Old 03-13-2012, 05:12 PM
 
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re: Polaris FST turbo engine, in a Redline?

Ok, you've asked a ton of questions. The FST engine has the head on the opposite direction as the Redlines. It can be turned around but you need to brake the timing chain and you also need the cam from a Redline engine and the water manifold from the Redline. If you are not familiar with the Weber engine and if you don't have some of the needed Weber specific tools I don't advise doing this. You'll need a cam chain link and a head gasket also. The FST does have the correct pistons and exhaust valves so you'll save that part of the expense. The electronics on the FST sled are not compatible with the Redlines without extensive changes. The one map sensor is the only part that is compatible with the Redline wiring harness. You'll need a Walbro off road ECU for the latest turbo application available from Weberpower.com or Red Rock Power Sports. The fuel injectors from the FST are also used. The turbo assembly has to be mounted upside down and reindexed to clear the Redline trans. Support brackets have to be fabricated for the turbo. The waist gate mount will need to be modified to give full boost. The FST throttle bodies and manifolds will not fit the Revolt without extensive modifications. The sock Redline throttle bodies will work with map sensor position modified and fabricated air intake plenum. You'll need a blow off valve, manual boost controller, intercooler, air intake and filter to the turbo, fabricated exhaust and a hole lot of plumbing to hook it all together. Its not a bolt in from the FST sled to the Redline and your not going to save a ton of money.
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post #7 of 15 (permalink) Old 03-13-2012, 05:19 PM
 
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Re: Weber turbo polaris fst sled Motor

You will have to turn the head 180 degrees and use the cam shaft out of the Revolt engine. If you use the wiring from the snowmobile you need to use all of it to make it work right. I would buy the turbo ECU for the Revolt
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post #8 of 15 (permalink) Old 03-13-2012, 07:33 PM Thread Starter
 
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re: Polaris FST turbo engine, in a Redline?

Thanks guys, I knew it wouldn't be as simple as I thought.
I wonder if their is enough room for the above 4cyl Yamaha Apex R1 Snow Mobile Motor in a Revolt?
Seems like a lot less hassle to get 140 horse with the Weber.
The Apex motor is 150 horse stock. 180 plus is available with mapping/reflash changes.
Plenty of room for a 4cyl in the Riot.


2007 HMF customized Revolt (exhaust, fuel controller, wrap, bumpers and narrowed suspension for GNCC racing).
Full hand controls, separate braking, DWT beadlocks, 2:1 steering quickener,
Fireball Billet hubs, Holeshot ATR's and Unisteer electric power steering, swaybars and Tatum rack.
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post #9 of 15 (permalink) Old 03-13-2012, 07:37 PM
 
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re: Polaris FST turbo engine, in a Redline?

You can make the Apex fit if you have a welder, torch and about 6 months to work on it! The Weber is actually easier.
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post #10 of 15 (permalink) Old 03-14-2012, 04:04 PM
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Re: Polaris FST turbo engine, in a Redline?

Quote:
Originally Posted by renegadevtwin View Post
Thanks Bear Foot, Im sure mike will chime in. Can you move this thread to general discussion and change the title? Thanks
Done Thread moved and renamed.



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Last edited by Bear Foot; 03-14-2012 at 08:59 PM.
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